#include <hd_led.h>
#include <hd_oled.h>
#include <pd_i2c_hd.h>
#include <hd_oled_protocol_i2c.h>
#include <pd_i2c_sim.h>
#include <pd_spi_io.h>
#include <stddef.h>
#include <pd_spi_sim.h>
#include <hd_oled_protocol_spi.h>
#include <pd_spi_hd.h>
#include "main.h"


#define ARRAY_SIZE(x)       sizeof(x) / sizeof(x[0])
#define USE_HARDWARE_SPI    1
#define USE_HARDWARE_I2C    1
OLED oled;

extern void SystemClock_Config(void);

void oled_instance(OLED *oled);


int main(void) {

    SystemClock_Config();

    NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_2);

    oled_instance(&oled);

    OLED_printf(&oled, 0, 0, "BKP RW");
    OLED_refresh(&oled);

    /* RCC_APB1ENR1: Bit 28 PWREN: Power interface clock enable */
    LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_PWR);
    /* PWR_CR1: Bit 8 DBP: Disable backup domain write protection */
    LL_PWR_EnableBkUpAccess();
    /* TAMP_BKPxR(x=0,1,2,3) */
    LL_RTC_BAK_SetRegister(RTC, LL_RTC_BKP_DR0, 0xA1B2D3C4);
    uint32_t data = LL_RTC_BAK_GetRegister(RTC, LL_RTC_BKP_DR0);
    OLED_printf(&oled, 0, 16, "0x%08X", data);
    OLED_refresh(&oled);

    while (1) {}

}


void oled_instance(OLED *oled) {
    // I2C gpio init
    static GPIO oledSckGPIO, oledSdaGPIO;
    GPIO_constructor(&oledSckGPIO, GPIOB, LL_GPIO_PIN_10); // I2Cx_SCK
    GPIO_constructor(&oledSdaGPIO, GPIOB, LL_GPIO_PIN_11); // I2Cx_SDA

#ifdef USE_HARDWARE_I2C
    static I2CHardware i2c2;
    I2CHardware_constructor(&i2c2, I2C2, &oledSckGPIO, &oledSdaGPIO);
#elif USE_SIMULATE_I2C
    static I2CSimulate i2c2;
    I2CSimulate_constructor(&i2c2, &oledSckGPIO, &oledSdaGPIO);
#endif
    I2C_init((I2C *) &i2c2);

    // OLED protocol of I2C
    static OLEDProtocolI2C oledProtocolI2c;
    OLEDProtocolI2C_constructor(&oledProtocolI2c, (I2C *) &i2c2);

    // OLED font instance.
    static OLEDFont oledFont;
    OLEDFont_contructor(&oledFont, NULL);

    // OLED instance of 4-PIN(I2C)
    OLED_constructor(oled, (OLEDProtocol *) &oledProtocolI2c, &oledFont);

    OLED_init(oled);

    OLED_clear(oled);
    OLED_refresh(oled);
}

